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The question consist of two statements e...

The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses:
Assertion: `[Fe(H_2O)_5NO]SO_4` is paramagnetic.
Reason: The `Fe` in `[Fe(H_2O)_5NO]SO_4` has three unpaired electrons.

A

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

(c) If assertion is true but reason is false.

D

(d) If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Iron in `[Fe(H_2O)_5NO]SO_4` exists in `+2` oxidation state having electronic configuration `(3d)^6`. The unpaired electron of `NO` is shifted to `Fe^(2+)` changing it to `Fe^(+)` and also changes NO to `NO^(+)`. The electronic configuration of iron in the complex thus becomes `(3d)^7` with three unpaired electrons as in the complex, `sp^3d^2`-hybridization exists.
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